Molding-machine.



PATENTED JULY 17, 1906.

' J; R. PEIRGE. MOLDING MACHINE. APPLIOATION FILED JUNE 16.1905.

5 SHEETS-SHEET 1- M N f Q 5% J RN w fist INVENTOR:

No. 825,933. PATENTED JULY 17, 1906.

J. R. PEIRGB;

' MOLDING MACHINE.

APPLICATION FILED JUNE 16,1905.

5 SHEETS-SHEET 2.

FIG. 4,

INVENTOR:

No. 825,933.- PATENTED JULY 17, 1906. J R PEIROE MOLDING MACHINE. APPLICATION FILED JUNE 16,1905.

5 SHEETS-SHEET 3.

FIG. 7.

INVENTOR:

By Atzomys;

WITNESSES No. 825,933. PATENTED JULY 17, 1906.

J. R. PEIROB.

MOLDING MACHINE.

APPLICATION FILED JUNE is. 1905.

' 5 SHEETS-SHET 4 INVENTOR:

WITNESSES:

04a fl r $2 4 B A mes,

lio. 825,933. PATENTEDJULY 17,1906.

J. R. PBIRGE. MOLDING MACHINE.

APPIZIOATION FILED JUNE 16 1905.

5 SHEETS-SHEET 5.

FIG. /0.

UNITE STATES JOHN ROYDEN PFIROE, OF NEW YORK, N. Y.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented July 17, 1906.

Application filed June 16,1905. Serial No. 265,593.

To (all whom it 'HMI/Z/ concern:

Be it known that 1, JOHN RoYDEN PEIROE, a citizen of the United States, residing in the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Molding- Machines, of which the following is a specification.

The improved machine of this invention is designed for cutting moldings in st'onesuch for example, as the marble moldings used in door-frames or similar situations-and aims to provide a machine whereby the work can be done very rapidly and very perfectly.

In my applications for Patent Serial Nos. 227,842 and 245,304, filed, respectively, October 10, 1904, and Februaryll, 1905, I have described the use of a cutting-wheel of agglomerated coarse crystalline very hard material, 'such as coarse carborundum, by means of which thestone can be cut to the desired pattern with great rapidity and with a very clean, sharp, and smooth effect and without the heating of the stone which occurs with emery or carborundum wheels of commercial sizes or with steel tools operating at desirable speeds. k

In my application Serial No. 245,304, filed February 11, 1905, I have described the use of two simultaneously-operating wheels, a coarse roughing-out wheel, and a finer molding-wheel, respectively, for obtaining the same result more expeditiously.

My present application is, in part, a division of the aforesaid applications and 'de scribes certain features of the invention which adapt it especially to the cutting of moldings in marble and other stone by the use of rotating carborundum-wheels and which is also capable of use in connection with cutters of other materials.

The accompanying drawings illustrate machines embodying the invention.

Figure 1 is a front elevation of a two-wheel machine. Fig. 2 is a detail showing the mounting of the wheels, slightly modified. Fig. 3 is an elevation, partly in section, of a singlewheel machine, the wheel being omitted. Fig. 4 is a horizontal section of the machine of Fig. 1 at approximately the level of the molding-wheel shafts. Fig. 5 is a plan of the portionof the machine carrying the cutting-wheels, showing the relative positions of the principal parts and omitting details. Fig. 6 is an end elevation of the machine, showing the driving-shaft and adjating the cutting-wheels.

' the carria e E.

cent parts. Fig. 7 is a side elevation, partly in section, the bed appearing in transverse section. Fig. 8 is a side view of a cuttingwheel of amodified shape and function. Fig. 9 is a vertical section approximately through the line 9 9, Fig. 11. Fig. 10 is a horizontal section approximately at the plane of the adjusting-shafts. Fi 11 is a portion of Fig. 1 enlarged for the saIre of clearness and omit- Fig. 12 is a section on the line 12 12 of Figs. 9 and 10.

Referring to the embodiment illustrated in the drawings, A is a longitudinally-moving bed similar to that usually employed in planers. stone, is clam ed on the bed and is fed therewith in the irection of the arrow, Fig. 1.

The stone passes in succession under the roughing-out Wheel 0 and the molding-wheel D, the former bein preferably of the coarsest grade of carborunrfum and the latter of afiner grade of the same material. The two wheels or their hafts are mounted in a carriage E, which may be adjusted laterally of the table, being arranged in slideways in a verticallyadjustable frame F, the latter in turn being arranged in slideways in the two ,standards G and being counterbalanced by means of weights H. The relative elevations of the two wheels C and D may be adjusted, the shaft of the wheel C being mounted for this purpose in bearing-blocks J at its opposite ends and which are vertically adjustable in The moIding-wheel D will have the contour which it is desired to have in the work. The roughing-out wheel C may be of'the same contour or roughly approximating the same and lying within the line of the molding-wheel, st)

95 as to cut more or less closely to the finished pattern.

The use of two separate wheels to cut the molding has certain great advantages over the use of a single wheel, especially for large 10o moldings.v There are certain advantages in making a cutting-wheel soft and other advantages in making it hard. Within practical limits the softer wheel cuts the more quickly because it does not glaze its own face. reason of its softness it renews its own cutting-face very rapidly so as to be practically self-shar ening. These advantages are fully secured y making the molding-wheel comparatively soft, thus enabling it to cut a great 1 1o rapidly.

quantity of material and to out very line and.

The fact that it cuts a rather long The work, consisting of a slab B, of

By rc5 that .it does not preserve its shape perfectly Id, therefore be made very-hard, so that it preare not material in a roughing-out wheel. Therefore for this wheel I may use the coarsest ca.rborundum-four-grit or fourn1esh,for'

ex'ampleand make it as soft as practicable.

I then arrange it'so as to cut out nearly the entire molding, leaving only one-sixteenth to one-eighth ofan inch of material for the molding-wheel, to cut away. The molding-wheel having "so little material to cut away can serves its edges sharpand'produces a correspondingly 4 shar molding. The small amount of materia to be cut has-practically no glazinge'ffect onthe molding-wheel. This wheel may, in fact, be made so fine as to do away with a large part of the hand rubbing .and finishing now ordinarily practiced.

' chi ping action than a pulverizing action.

y extensive experiments I have found that for the greatest efficiency the speed of the cutting-wheels should be very high, andthe feed of the marble comparatively slow,

depending on the depth or quantity of mar ble cut out. For example, Ihave built a machine having a surface speed of about five thousand five hundred feet per minute for the cutting-wheels and having a speed of from three to thirty-six inches per minute for the marble. The mechanism for obtaining these s eeds is illustrated in Figs. 1, 4, and 6. A

riving-shaft K is provided with a drum L, carrying two belts running to the pulleys M and N, respectively, of the roughingsout and molding wheels. By driving the two outting-wheels separately a variation in the speed of revolution is made possible. The feed of the marble-isrcontrollcd from a lower shaft 0, which is driven from the. upper shaft K by means of a pair of cone-pulle s and a belt P. The shaft() carries a pair of eedulleys which drive, respectively, a slow feedelt Q and a fast feed-belt R, which drive pulleys adapted to be clutched to a shaft S, which is connected by gears T, U, and Vto the threaded shaft W, which mqves the bed A forward and back according to the direction of rota-. tion of the shaft in the usual manner.

quick-return'belt X is provided driven, pref-- erably, from a pulley-on the shaft K and communicating motion to a pulley adapted to be clutched on the shaft S. The clutch Y on the shaft S is controlled by a lever Z, and the clutches a and b on the shaft 0 are controlledby levers c and d, respeetively. By these ar The rough rangements and a suitable belt-shifter for the belt P on the cone-pulleys in order. to make fine variations in speed the feed may he nicely adjusted to suit the hardness of the marble and the depth of cut. erator avoids undue strain on the wheels While securing the maximum output of the machine.

The vertically-adjustable frame, which I designate as a whole by the letter F, is provided with suitable slides e e, engaging, re spectively, suitable slideways at the front and rear of the standards G. t is raised. and lowered by rotating nuts f, held between bearings at the sides of the frame and threaded upon screw-shafts g, solidly mounted at their lower ends in the of the standards. The nuts f are rotated by means of pinions h at the lower ends of shafts j, mounted upon the sides of the frame, the shafts being rotated by means of gearing connecting them toa common horizontal shaft is, which in turn is driven from a shaft Z, projecting through the.

ment transversely of the feed of the marble.

The movement is effeetedby the rotation of a nut 11, Fig. 12, which is firmly held between two central partitions of the frame F and which, is threaded upon a screw-shaft q, firmly connected at opposite ends to the carriage E. The nut p is rotated by means of an intermediate pinion r from the shaft s,

Thus the opwhich projects through to the front of the machine and is provided with a handwheel t.

The carriage E is shown best in Figs. 7 and 9 to 11. The shaft u of the molding-wheel D is mounted in antifrietion-bearings in a shorter portion of the carriage, while the shaft r of the roughing-out wheel 1s mount ed blocks J, one of which is provided at each end of a longer portion of the carria e.

The adjustment of the bearing-bihchs J is effected by means of nuts w, supported upon end. portions of the carriage and threaded in the vertically-adjustablc bearingupon screw-shafts .21, connected to thebeai fweightsfH. i

great degree of rigidity which is essential to the nicest work. The standards are also connected at the top andcarry suitable guide-pulleys v2 and 3 .for the steel ropes 4, which connect the frame F with its counter- The term .jmo1dingi"-is"usedhere in a generic sense to ii'pply to the operation of roughing out the stoneas well as reducing it to the finished form, and also to include thecutting of groovesor rabbets or bevels; the fiuting of columns, and'allsimilar operations. With this improved machine, the stone being clamped upon the bed, the cutting-wheel can be adjusted wth the'greatest accuracy in both the lateral and the vertical directions, so that when the cutting-wheel is started up and the stone is given the necessary longitudinal motion the molding can be out very accurately as 'well as rapidly. In addition, where two wheels are used in a single machine, the relative heights of these two wheels may be perfectly adjusted, so that each will cut an amount proportioned to its capacity. I

Instead of using the machine described with two cutters operating simultaneously the machine of Fig. 3 may be used, having a single cutter-shaft 5, upon which may be mounted the cutting-wheels, first a roughingout wheel and afterward a molding-wheel, the complete operation requiring in this case two passages of the stone through the machine. Except for the rovision for vertically adjusting one sha t relatively to the other the adjustments and operations in this machine are identical with those in the machine of Fig. 1. A reversing-gear of wellknown type for operating the bed is illustrated somewhat diagrammaticall at 7. The carriage is designated E and tie vertically-adjustable frame F,

The roughingout or molding wheel, or both wheels, may be advantageously rovided with a hood or hoods 8, Fig. 2, w 'ch may be fastened to the front of the carriage and extend over the to s and sides of the wheels. Through these oods a jet of water may be introduced and the water retained upon the wheel in the manner set forth indetail in myapplication for patent filed December' 14, 1904, Serial No. 236,778, or" other methods of applying a cooling-jet may be used and will be specially useful in connection with the molding-wheel, which should be much finer than the roughing-out wheel.

An important application of the machine is illustrated in Fig. 8, by means of whichthe slab of marble may be divided and a molding formed at the same time on the new edge. For this ur ose the cutter, which may be a coarse W ee C, is provided with a portion 9 of larger diameter and arranged at such a] level as to cut through the slab B. The. main or molding portion of the wheel fm'mfl at the same time a molding along the new edge of the slab. A molding portion of the wheel might be arranged at each side of the through-cutting portion 9. The part 9 is, in fact, a coping-wheel, acting in the same way as in the coping-machine described in my application Serial No. 230,863, filed'October 31, 1904. Besides the decorative effect of the molding portion of thewheel, which makes, at an inapp'reciable increase of cost, a product of higher selling value, this molding portion of the wheel strengthens the coping portion 9, permitting the latter to be made very thin and permitting an increase in the speed of rotation over that which would be possible with such a thin wheel without the reinforcing molding portion. Ordinarily, the bedA willbe covered with a coating 10 of plaster-ofparis or the like, so as to avoid injury to the table or to the coping portion ot the wheel where the latter passes through the stone, or the coping portionQof the wheel may pass not entirely through the stone, leaving-a thin web at the bottom to be afterward broken off: i i v Though I have described with great particularity of detail certain apparatus embodying my invention, yet it isnot to be understood therefrom that the invention is limited to the specific embodiments disclosed.

Various modifications thereof in detail and in the arrangement and combination of the parts may be'made by those skilled in the art without departure from the invention.

- What I claim is- Y 1. A stone-molding machine including in combination a roughing-out and a molding wheel, and a single carriage carrying said wheels and adjustable laterally.

2. A stone-molding machine including incombination a roughing-out and amolding wheel, a laterally-adjustable carriage carryin both said wheels, and a vertically-adjustabTe frame carrying said carriage.

3. A stone-molding machine including in combination a roughingout wheel of coarse carborundum adapted to cut the stone to approximately the shape of the desired mold,

and a molding-wheel o1" fine carborundum :adapted to cut the stone to the final shape,

one of said wheels being adjustable relatively to the other, and both of said wheels being adjustable relatively to the work.

4. A stone-molding machine including in combination a roughing-out wheel of coarse carborundum adapted to cut the stone to approximately the shape of the desired mold,

and a molding-wheel of fine carborunduin adapted to cut the stone to the final shape, one of said wheels being adjustable relatively to the other, a bed for carrying the work, and means for ad'ustin the. position of both wheels relatively to t e bed.

5. A stone-molding machine including in combination a rou hm -out wheel of coarse rate of speed, and connections including -tal shaft 7c operating said shafts j, and a shaft carborundum, a molding-wheel of fine carborundum', a feed table, said wheels being arranged to operate successively on a slab carried on said feed-table, a driving-shaft K, connecting means between said shaft and said Wheels for driving the latter at a high Z projecting through the face of the frame and provided with a hand-Wheel m. j

7. A stone-molding machine including in combination a rotating molding-wheel, a carriage E carrying said Wheel and arranged to slide backward and forward transversely of the feed of the stone, a relatively fixed nut 17, a screw-shaft q connected to the carriageE, a

shaft 8 operating said nut 19 and projecting.

through the front of the machine, and a hand-Wheel tfor said shaft.

Witnesses.

8. A stone-molding machine including in combination a pair of rotating moldingwheels C and D having shafts v and u respectively projecting from said Wheels at the front of the carriage to and beyond the rear of the carriage, pulleys M and N on the rear ends of said shafts, and bearings in said carriage for the opposite ends of each of said shafts, the shaft a being shorter than the shaft '0, and the rear end of the carriage being correspondingly offset so that the pulleys M and N are not in line with each other.

9. A stone-molding machine including in combination a roughing-out Wheel C, a molding-wheel D, a carriage E, a shaft 'wfor the molding-wheel mounted fixedly in bearin s in said carriage, bearing;bl0cks J vertical y movable in said carriage, a shaft '0 for the roughing-out wheel mounted in said bearingblocks, and means for adjusting said bearingblocks vertically to determine the position of the roughing-out wheel relatively to the molding-Wheel.

In witness whereof I have hereunto si 0d my name in the I JOHN ROYDEN- PEIROE; Witnesses DOMINGO A. USI'NA, THEODORE 'LSNELL'.

presence of two subscriing 

